<template>
    <div class="directorys-container">
        <el-card class="box-card" is-always-shadow>
            <!-- 输入框 以及功能操作区域 -->
            <el-row>
                <el-col :span="18">
                    <el-form :inline="true" :model="queryInfo" ref="dirFormRef" class="demo-form-inline"
                             v-loading="loading">
                        <el-form-item label="目录名称" prop="directoryName">
                            <el-input size="small" clearable @clear="getdirList"
                                      v-model.trim="queryInfo.directoryName" @keyup.enter="getdirList"></el-input>
                        </el-form-item>
                        <el-form-item label="状态" prop="state" class="form-use">
                            <el-select v-model="queryInfo.state" placeholder="请选择" size="small">
                                <el-option label="启用" value="1"></el-option>
                                <el-option label="禁用" value="0"></el-option>
                            </el-select>
                        </el-form-item>
                        <el-form-item>
                            <el-button size="small" @click="onClear">清空</el-button>
                            <el-button type="primary" @click="getdirList" size="small">搜索</el-button>
                        </el-form-item>
                    </el-form>
                </el-col>
                <el-col :span="6">
                    <el-button style="float: right; padding: 10px" type="success" icon="el-icon-edit" size="small" @click="addDirect">
                        新增目录
                    </el-button>

                    <el-button style="float: right; margin-right: 10px" type="text" icon="el-icon-back" @click="$router.back()"
                    v-if="$route.query.id">
                        返回学科
                    </el-button>
                </el-col>
            </el-row>
            <!-- / 输入框 以及功能操作区域 -->

            <!-- 消息提示区域 -->
            <el-row>
                <el-alert type="info" show-icon :closable="false" class="alret">
                    <div slot="title">共 {{ total }} 条记录</div>
                </el-alert>
            </el-row>
            <!--/ 消息提示区域 -->

            <!-- 数据操作 -->
            <el-table :data="directList" stripe style="width: 100%">
                <el-table-column type="index" label="序号" width="80px"></el-table-column>
                <el-table-column prop="subjectName" label="所属学科"></el-table-column>
                <el-table-column prop="directoryName" label="目录名称">
                </el-table-column>
                <el-table-column prop="username" label="创建者"></el-table-column>
                <el-table-column prop="addDate" label="创建日期">
                    <template slot-scope="scope">
                        {{ scope.row.addDate | parseTimeByString }}
                    </template>
                </el-table-column>
                <el-table-column prop="totals" label="面试题数量"></el-table-column>
                <el-table-column prop="state" label="状态">
                    <template slot-scope="scope">
                        <div>{{ scope.row.state === 1 ? '已启用' : '已禁用' }}</div>
                    </template>
                </el-table-column>
                <el-table-column prop="state" label="操作" width="140px">
                    <template slot-scope="scope">
                        <el-button type="text" @click="changeState(scope.row)">
                            <div>{{ scope.row.state === 0 ? '启用' : '禁用' }}</div>
                        </el-button>
                        <el-button type="text" :disabled="scope.row.state === 1"
                                   @click="editRedirect(scope.row)">修改
                        </el-button>
                        <el-button type="text" :disabled="scope.row.state === 1"
                                   @click="deleteRedirect(scope.row.id)">删除
                        </el-button>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 数据操作 -->

            <!-- 分页 -->
            <el-pagination background class="page" @size-change="handleSizeChange"
                           @current-change="handleCurrentChange" :current-page.sync="queryInfo.page"
                           :page-sizes="[2, 5, 10]" :page-size="queryInfo.pagesize"
                           layout="prev, pager, next, sizes, jumper" :total="total">
            </el-pagination>
            <!-- / 分页 -->
        </el-card>

        <!-- 添加对话框 -->
        <el-dialog title="新增目录" :visible.sync="dialogAddShow" width="400px" @close="handleClose" class="dialogAdd">
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px"
                     class="demo-ruleForm">
                <el-form-item label="所属学科" size="small" prop="subjectID">
                    <el-select v-model="addForm.subjectID" placeholder="请选择所属学科">
                        <el-option v-for="item in subjectList"
                                   :key="item.value"
                                   :label="item.label"
                                   :value="item.value"></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="目录名称" size="small" prop="directoryName">
                    <el-input v-model="addForm.directoryName" placeholder="请输入目录名称"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="dialogAddShow = false">取 消</el-button>
                <el-button type="primary" @click="dialogAddForm">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改对话框  -->
        <el-dialog title="修改目录" :visible.sync="dialogEditShow" width="400px" class="dialogAdd" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px"
                     class="demo-ruleForm">
                <el-form-item label="所属学科" size="small" prop="subjectID">
                    <el-select v-model="editForm.subjectID">
                        <el-option v-for="item in subjectList"
                                   :key="item.value"
                                   :label="item.label"
                                   :value="item.value"></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="目录名称" size="small" prop="directoryName">
                    <el-input v-model="editForm.directoryName"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="dialogEditShow = false">取 消</el-button>
                <el-button type="primary" @click="dialogEditForm">确 定</el-button>
            </span>
        </el-dialog>
        <!-- / 修改对话框  -->
    </div>
</template>

<script>
import { parseTimeByString } from '@/filters'
import { list, add, changeState, update, remove } from '@/api/hmmm/directorys'
// 因为es6不允许重复的 导入的项 只能用之前的来代替了
// const { list: subjects } = require('../../api/hmmm/subjects')
import { list as subjects, simple } from '@/api/hmmm/subjects'
import { delQuestionItem } from '@/api/hmmm/questions'

export default {
    name: 'subject-directory',
    created () {
        this.queryInfo.subjectID = this.$route.query.id
        // 获取学科列表
        this.subjectLists()
        // 获取目录列表
        this.getdirList()
    },
    data () {
        return {
            // 获取学科列表数据
            subjectList: [],
            // 获取目录列表数据
            directList: [],
            // 获取查询用户信息的参数
            queryInfo: {
                // 当前的页数，即页码
                page: 1,
                // 每页显示的数据条数
                pagesize: 10,
                subjectID: null,
                directoryName: null,
                state: null
            },
            // 总数据条数
            total: 0,
            // 弹出层显示与隐藏
            dialogAddShow: false,
            // 添加表单数据对象
            addForm: {
                directoryName: '',
                subjectID: ''
            },
            // 修改表单数据对象
            editForm: {
                subjectID: '',
                directoryName: ''
            },
            // 验证添加表单的规则
            addFormRules: {
                directoryName: [
                    {
                        required: true,
                        message: '请输入目录名称',
                        trigger: 'blur'
                    },
                    {
                        min: 1,
                        max: 8,
                        message: '长度在 1 到 8 个字符',
                        trigger: 'blur'
                    }
                ]
            },
            // 修改表单的验证规则
            editFormRules: {
                directoryName: [
                    {
                        required: true,
                        message: '请输入目录名称',
                        trigger: 'blur'
                    },
                    {
                        min: 1,
                        max: 8,
                        message: '长度在 1 到 8 个字符',
                        trigger: 'blur'
                    }
                ]
            },
            // 加载默认状态
            loading: false,
            // 修改弹出层显示与隐藏
            dialogEditShow: false,
            // 修改获取的id
            data_id: ''
        }
    },
    methods: {
        // 请求接口 获取目录列表数据
        async getdirList () {
            try {
                // 加载load开始
                this.loading = true
                const { data } = await list(this.queryInfo)
                this.directList = data.items
                this.total = data.counts
                // 加载load关闭
                this.loading = false
                // 提示成功
                this.$message.success('获取列表成功')
            } catch (err) {
                // 加载load关闭
                this.loading = false
                // 提示失败
                this.$message.error('获取列表失败')
            }
        },
        // 获取学科列表数据
        async subjectLists () {
            try {
                const { data } = await simple()
                this.subjectList = data
            } catch (err) {
                this.$message.error('获取学科列表失败')
            }
        },
        // 清空输入框和 下拉框
        onClear () {
            this.queryInfo = {
                // 当前的页数，即页码
                page: 1,
                // 每页显示的数据条数
                pagesize: 10,
                subjectID: null,
                directoryName: null,
                state: null
            }
            this.$refs.dirFormRef.resetFields()
            this.getdirList()
        },
        // 点击按钮弹出显示层
        addDirect () {
            // 弹出层显示
            this.dialogAddShow = true
        },
        // 重置表单数据
        handleClose () {
            this.$refs.addFormRef.resetFields()
        },
        // 确认提交表单 添加
        dialogAddForm () {
            // 点击确定按钮，添加新用户
            // 调用validate进行表单验证
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                try {
                    // 加载load开启
                    this.loading = true
                    await add(this.addForm)
                    // 加载load关闭
                    this.loading = false
                    // 提示消息
                    this.$message.success('添加成功')
                    // 关闭弹出层
                    this.dialogAddShow = false
                    this.queryInfo.page = 1
                    // 更新渲染
                    await this.getdirList()
                } catch (err) {
                    // 失败提示
                    this.$message.error('添加失败')
                    // 加载load关闭
                    this.loading = false
                }
            })
        },
        // 点击 切换状态
        async changeState (set) {
            // set.state = !set.state
            try {
                await changeState({
                    id: set.id,
                    state: set.state === 0 ? 1 : 0
                })
                // 判定状态 0 的话变成1 或者0
                set.state = set.state === 0 ? 1 : 0
                this.$message.success('切换成功')
            } catch (err) {
                this.$message.error('切换失败')
            }
        },
        // 点击 修改按钮 获取数据
        editRedirect (row) {
            // 获取这行的数据
            this.data_id = row.id
            this.editForm.subjectID = row.subjectID
            this.editForm.directoryName = row.directoryName
            // 显示弹出层
            this.dialogEditShow = true
        },
        // 点击对话框按钮 修改数据
        dialogEditForm () {
            // 提交之前预验证提交之前的数据是否合法(如果开始用户没填写直接登录打回去)
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                try {
                    // 加载开始
                    this.loading = true
                    // 发送请求
                    await update({
                        subjectID: this.editForm.subjectID,
                        directoryName: this.editForm.directoryName,
                        id: this.data_id
                    })
                    // 关闭加载
                    this.loading = false
                    // 更新渲染页面
                    this.getdirList()
                    // 成功的提示
                    this.$message.success('修改成功')
                    // 弹出层隐藏
                    this.dialogEditShow = false
                } catch (err) {
                    // 弹出层隐藏
                    this.dialogEditShow = false
                    // 关闭加载
                    this.loading = false
                    this.$message.error('修改失败')
                }
            })
        },
        // 修改参数后重置里面的参数
        editDialogClosed () {
            this.$refs.editFormRef.resetFields()
        },
        // 删除功能
        async deleteRedirect (id) {
            // 弹出消息提示框
            this.$confirm('此操作将永久删除该题目, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(async () => {
                // 加载状态开启
                this.loading = true
                await remove({ id })
                // 加载状态关闭
                this.loading = false
                this.$message.success('删除成功')
                // 更新页面
                if (this.directList.length === 1 && this.queryInfo.page > 1) this.queryInfo.page--
                await this.getdirList()
            }).catch(err => {
                // 加载状态关闭
                this.loading = false
                this.$message.error('删除失败')
            })
        },
        // 更新当前页数
        handleSizeChange (newSize) {
            // pagesize改变时触发，当pagesize发生改变的时候，我们应该
            // 以最新的pagesize来请求数据并展示数据
            this.queryInfo.pagesize = newSize
            // 重新按照pagesize发送请求，请求最新的数据
            this.getdirList()
        },
        // 更新当前页面
        handleCurrentChange (current) {
            // 页码发生改变时触发当current发生改变的时候，我们应该
            // 以最新的current页码来请求数据并展示数据
            this.queryInfo.page = current
            // 重新按照pagenum发送请求，请求最新的数据
            this.getdirList()
        },
    },
    filters: {
        parseTimeByString
    }
}
</script>

<style lang="scss" scoped>
::v-deep.directorys-container {
    .dialogAdd .el-dialog__footer {
        text-align: right !important;
    }

    padding: 10px;

    .box-card {
        padding: 10px;

        .form-use {
            margin-left: 20px;
        }

        .alret {
            margin-bottom: 15px;
        }

        .page {
            margin-top: 20px;
        }

        .el-pagination {
            float: right;
        }
    }

    .el-select {
        width: 260px;
    }
}
</style>
